Abstract
Fluid flow in a small region under sub-micrometer (e.g., porous media) is difficult to treat by conventional macroscopic continuum picture. There are many approaches to study flow in sub-micrometer scale by improvement of methods such as Lattice Boltzmann Methods. Other approach is bottom-up from molecular scale, at which fluid is treated as assembly of a large number of molecules. In this paper, we adopt latter to study fluid flow in nano pores by using molecular dynamics simulation with our new boundary condition for flow generation. In this new method, mirror images for the boundary condition are contracted at upstream side or elongated at downstream side to generate flow. We have confirmed that flow can be generated by this method. We also analyze the motion of nano droplet on the solid wall.
